Green Energy Strains Rare Earth Supply
As the world moves toward greater use of low-carbon and zero-carbon energy sources, a possible bottleneck looms, according to a new MIT study: the supply of certain metals needed for key clean-energy technologies.
Wind turbines, one of the fastest-growing sources of emissions-free electricity, rely on magnets that use the rare earth element neodymium. And the element dysprosium is an essential ingredient in some electric vehicles’ motors. The supply of both elements — currently imported almost exclusively from China — could face significant shortages in coming years, the research found.
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